Q10 of 22 Page 2

Let A = {1,2,3….14}. Define a relation R from A to A by R = {(x,y) : 3x - y = 0, where x,yA}. Write down its domain, codomain and range.


3x-y = 0 
 

x

1 

2 

3 

4 

y

3

6

9

12

R = {(1,3) (2,6) (3,9) (4,12)}
Domain of R = {1,2,3,4}
Range of R = {3,6,9,12}
Codomain of R = {1,2,3…,14}

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